21857162418

Names of 21857162418

• Cardinal: 21857162418 can be written as Twenty-one billion, eight hundred fifty-seven million, one hundred sixty-two thousand, four hundred eighteen.

Scientific notation

• Scientific notation: 2.1857162418 × 10¹⁰

Factors of 21857162418

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 236

Divisors of 21857162418

• Number of divisors d(n): 384
• Complete list of divisors:
  1 2 3 6 7 9 13 14 18 21 26 27 39 42 54 61 63 71 78 79 91 117 122 126 142 158 169 182 183 189 213 234 237 273 338 351 366 378 426 427 474 497 507 546 549 553 639 702 711 793 819 854 923 994 1014 1027 1098 1106 1183 1278 1281 1422 1491 1521 1586 1638 1647 1659 1846 1917 2054 2133 2366 2379 2457 2562 2769 2982 3042 3081 3294 3318 3549 3834 3843 4266 4331 4473 4563 4758 4819 4914 4977 5538 5551 5609 6162 6461 7098 7137 7189 7686 8307 8662 8946 9126 9243 9638 9954 10309 10647 11102 11218 11529 11999 12922 12993 13351 13419 14274 14378 14457 14931 16614 16653 16827 18486 19383 20618 21294 21411 21567 23058 23998 24921 25986 26702 26838 27729 28914 29862 30317 30927 31941 33306 33654 33733 35997 38766 38979 39263 40053 42822 43134 43371 49842 49959 50481 55458 56303 58149 60634 61854 62647 63882 64701 67466 71994 72163 72917 77958 78526 80106 83993 86742 90951 92781 93457 99918 100962 101199 107991 112606 116298 116937 117789 120159 125294 129402 130113 144326 145834 149877 151443 167986 168909 174447 181902 185562 186914 187941 194103 202398 215982 216489 218751 233874 235578 240318 251979 260226 272853 278343 280371 299754 302886 303597 323973 337818 342149 348894 353367 360477 375882 388206 394121 432978 437502 438529 503958 506727 510419 545706 556686 560742 563823 607194 647946 649467 656253 684298 706734 720954 731939 755937 788242 814411 818559 841113 877058 910791 947921 1013454 1020838 1026447 1060101 1127646 1182363 1298934 1312506 1315587 1463878 1511874 1520181 1531257 1628822 1637118 1682226 1691469 1821582 1895842 1948401 1968759 2052894 2120202 2195817 2267811 2364726 2395043 2443233 2523339 2631174 2843763 3040362 3062514 3079341 3382938 3547089 3896802 3937518 3946761 4391634 4447937 4535622 4593771 4790086 4886466 5046678 5123573 5687526 5700877 6158682 6587451 6635447 7094178 7185129 7329699 7893522 8531289 8895874 9187542 9238023 10247146 10641267 11401754 11840283 13174902 13270894 13343811 13781313 14370258 14659398 15370719 17062578 17102631 18476046 19762353 19906341 21282534 21555387 21989097 23680566 25593867 26687622 27562626 30741438 31135559 34205262 39524706 39812682 40031433 43110774 43978194 46112157 51187734 51307893 57823181 59719023 62271118 64666161 80062866 92224314 93406677 102615786 115646362 119438046 120094299 129332322 138336471 153923679 173469543 179157069 186813354 240188598 276672942 280220031 307847358 346939086 358314138 404762267 520408629 560440062 809524534 840660093 1040817258 1214286801 1561225887 1681320186 2428573602 3122451774 3642860403 7285720806 10928581209 21857162418
• Sum of all divisors σ(n): 62738841600
• Sum of proper divisors (its aliquot sum) s(n): 40881679182
• 21857162418 is an abundant number, because the sum of its proper divisors (40881679182) is greater than itself. Its abundance is 19024516764

Bases of 21857162418

• Binary: 10100010110110010011101010010110010₂
• Hexadecimal: 0x516C9D4B2
• Base-36: A1H6UGI

Squares and roots of 21857162418

• 21857162418 squared (21857162418²) is 477735548966831606724
• 21857162418 cubed (21857162418³) is 10441943486620430523022368898632
• The square root of 21857162418 is 147841.6802461337
• The cube root of 21857162418 is 2795.9619692187

Scales and comparisons

• 21,857,162,418 seconds is equal to 694 years, 51 weeks, 3 days, 10 hours, 18 seconds.
• To count from 1 to 21,857,162,418 would take you about one thousand, three hundred eighty-nine years!

  This is a very rough estimate, based on a speaking rate of half a second every third order of magnitude. If you speak quickly, you could probably say any randomly-chosen number between one and a thousand in around half a second. Very big numbers obviously take longer to say, so we add half a second for every extra x1000. (We do not count involuntary pauses, bathroom breaks or the necessity of sleep in our calculation!)

• A cube with a volume of 21857162418 cubic inches would be around 233 feet tall.

Recreational maths with 21857162418

• 21857162418 backwards is 81426175812
• The number of decimal digits it has is: 11
• The sum of 21857162418's digits is 45
• More coming soon!